| Texto completo | |
| Autor(es): |
Biloti‚ R.
;
Santos‚ L.T.
;
Tygel‚ M.
Número total de Autores: 3
|
| Tipo de documento: | Artigo Científico |
| Fonte: | STUDIA GEOPHYSICA ET GEODAETICA; v. 46, n. 2, p. 177-192, 2002. |
| Resumo | |
In conventional seismic processing, the classical algorithm of Hubral and Krey is routinely applied to extract an initial macrovelocity model that consists of a stack of homogeneous layers bounded by curved interfaces. Input for the algorithm are identified primary reflections together with normal moveout (NMO) velocities, as derived from a previous velocity analysis conducted on common midpoint (CMP) data. This work presents a modified version of the Hubral and Krey algorithm that is designed to extend the original version in two ways, namely (a) it makes an advantageous use of previously obtained common-reflection-surface (CRS) attributes as its input and (b) it also allows for gradient layer velocities in depth. A new strategy to recover interfaces as optimized cubic splines is also proposed. Some synthetic examples are provided to illustrate and explain the implementation of the method. (AU) | |
| Processo FAPESP: | 97/12125-8 - Inversão tomográfica de velocidades sísmicas utilizando tempos de reflexão multiparamétricos |
| Beneficiário: | Ricardo Caetano Azevedo Biloti |
| Modalidade de apoio: | Bolsas no Brasil - Doutorado |